Not sure where you are going with this ---
Even if new colors are announced next year, how would new colors (which you may or may not like) affect your computer life?
Did you have to settle for yellow, (maybe that's the only color that you didn't completely hate?)
Would you still continue to use your "yellow" iMac, even though there are "new" colors?
Or Apple offers a wonderful new color that you fall in love with --- Would your present yellow iMac still continue to work?
It's not like you replace your iMac every year (or do you?)
(Personally, I am hoping for Day-Glo orange - how about you?)